Grinding

Grinding refers to

1. When you're working hard either at work or at a job. (Working for the Money)
2. Gaming reference. Repeatedly performing an action/event to attain an item. Most commonly used when referring to an RPG (Role Playing Game), i.e. World of Warcraft, Final Fantasy, etc.

Personally Class-D MoNoRi-Chan hates grinding both in real life and in games to the greatest extent and will refuse to cooperate if the works deems to be too grindy.